Loom.



No. 694,!08. Patented remhzs, I902.

5. NIERHAUS & P. KAISER;

LOOM.

(Application filed July 22, 1901.

(No Ilodel.)

2 smug-shad 2.

Wi/zzesqes 9 present invention.

UNTTED STATES PATENT OFFICE.

ERNST NIERHAUS AND PETER KAIsERfoF BARMEN, GERMANY.

LOOM.

SPECIFICATION forming part of Letters Patent No. 694,108, dated February25, 1902.

Application filed July 22, 1901. Serial No. 69,312. (No model.)

To aZZ whom it may concern.-

Be it known that we, ERNST NIERHAUS and PETER KAISER, citizens of theGerman Empire, residing at Barmen, in the Province of Rhenish Prussiaand Kingdom of Prussia, Germany, have invented certain new andusefullmprovements in Looms; and we do hereby declare the following tobe a full, clear, and exact description of the invention, such as willenable others'skilled in the art to which it appertains to make and usethe same.

This invention relates to improvements in looms, by means of which itwill be possible to vary the width of the Woven article at will bychanging the spreading of the warpthreads, but at the same time varyingalso automatically the number of weft-threads in the same ratio-that isto say, to lay in more weft-threads when the width of the web isincreased and diminish the number of weftthreads in the linear Width inproportion to the reduction of the width of the weaving. This has forits "object to produce a fabric which will have in all its parts, thoughvarying in width without changing the number of the warp-threads, thesame textural tightness and quality. Similar efiects have been producedformerly, but the means used were of very complicated nature, whereas weattain the object by a very simple device, as will be seen from thefollowing description and drawings, in Which Figure 1 is a verticalview, partly in section, parallel to a line with the Warp-threads,showing those parts of the loom only which are necessary for theunderstanding of the Fig. 2 is a similar view showing the weft-regulatorin a raised position. Fig. 3 shows part of the loom With theweft-regulator in a lowered position. Fig. 4 shows, on. an enlargedscale, the nature of the fabric produced.

By 1 is indicated the beater or lathe of the loom, which is moved to andfro in the usual manner and by wellknown means. The beater is providedwith a so-called expansion-reed 2, the form of which in the present caseis such that by raising and lowering the same in the beater thewarp-threads are spread farther apart from each other in the one caseand brought closer together in the other case.

The raising and lowering of the reed 2 in the lathe according to theshape of the Weaving to be produced are caused in the example shown bythe cam 3, of suitable shape, and the shaft 4 of which is made torotate, by means of intermediate gear, from the main shaft 5, as shownby Figs. 1 and 2.

The cam 3 acts upon the friction-roller 6 of a lever 6, the free end ofwhich is connected by a rod 7 to one arm of the lever 9 at the top ofthe bracket 8. This lever 9 is connected by its other arm and aconnecting-rod 10 to arocking lever 11, upon which the rod 10 is adjustably fixed. The lever 11 is fixed to a rocking shaft 12 and causesthis to rock to and fro. To the shaft 12 is also keyed a lever 13, Fig.l, to the free end of which is fixed a rod 14 and at the lower end ofthis is sus- 7c pended the reed 2.

It will understood from the description given and the figures shown thatwhen the shaft 4 and the cam 3 are turned around the reed 2 will beraised and lowered according to the shape of the cam, and therefore thewarp-threads will be shifted closer together or farther apart from eachother, as the case maybe. This in itselfis not new. We, however, combinethis device with the arrange- 8o ment which we will now describe. Thegear turning the regulator of the cloth-beam 15 is set in motion by acam 16 on shaft 17, which is driven independently of the shaft 4 fromthe main shaft 5 in the following manner: The cam 16 works upon theroller 18 of the lever 18 and rocks the latter, and to the free end ofthe lever 18 is linked a rod 19, which again is connected to the end ofadouble-armed lever 20, the other end of which by a rod 21 is 0connected to the ratchet-lever 22 of the regulator. A spring 23 pullsthe lever 22 downward, and by the connection of thelevers and rods 21,20, and 19 it causes the roller 18 of the lever 18 to be pressedconstantly against 5 the cam 16. Now we fix to the frame of the loom aslide 24, which can be moved up and down vertically and to the lower endof which is fixed a set-screw 25 exactly above the lever 18,sothatthiscanstrikeagainst'theheadofthe 1:0 set-screw 25 when this isscrewed down deep enough. By means of the rod 26 the slide is suspendedto the lever28, carried on a bracket 27 at the top of the loom-frame,andthe free end of the lever 28 is connected by a rod 29 to a lever 30on the rocking shaft 12. Hence it follows that by the movements backwardand forward of the shaft 12 the reed in the lathe will be raised andlowered and also the slide 2-1 and both pieces (the reed and the slide)are raised or lowered, respectively, simultaneously. Then the reed israised, the warpthreads are brought closer together; but at the sametime the slide 24 and the set-screw are also raised, and therefore thelever 18 can make a larger stroke or swing out in a larger angle or areof the circle, and therefore the forward movement of the regulator andof the cloth-beam will be greater, more warp will be pulled forward,andconsequently the weft-threads will not lie so close together and thetightness of the weaving with regard to the weft-threads will bereduced. If, on the contrary, the reed will be lowered, the warp-threadswill be spread farther apart, and at the same time the slide 24, withthe set-screw 25, will be lowered and brought nearer to the lever 18.The stroke of this will therefore be reduced, and consequently also theturning of the regulator and of the cloth-beam will be diminished, lesswarp will be pulled forward, and the weft-threads will be closertogether with regard to the warpthreads and per unit of length ofweaving produced.

The device shown and described thus answers the purpose of varying thetightness of the warp-threads and of the weft-threads in such a ratiowith regard to each other that when the one part is brought closertogether the other part is laid in wider apart, and vice versa.

What we therefore claim as our invention, and desire to secure byLetters Patent, is-

In a loomfor weaving articles changing in width without increasing thenumber of the warp-threads and where the number of the weft-threads perunit of length varies in proportion to the width of the fabric anexpansion-reed 2 in a lathe 1, a rod 14 supporting said reed, a lever 13keyed to a rocking shaft 12, a lever on said shaft, a rod 29 connectingsaid lever 30 to a lever 28 pivotally carried on a bracket 27 of themachine-frame, a rod 26 suspended on lever 28 and carrying a slidingpiece 24 at its lower end, an adjustable set-screw 25 connected to saidsliding piece, a lever 18 below the set-screw 25 and actuated by a cam16 on shaft 17, in combination with a rod 19 linked to the free end ofsaid lever 18, a lever 20 jointed to said rod 19, a connecting-rod 21 atthe other end of lever 21 and connected to the ratchet-lever 22 of theregulator of the loom, the whole as described and illustrated and forthe purpose set forth.

In testimony whereof we have afiixed our signatures in presence of twowitnesses.

ERNST NIERHAUS. PETER KAISER.

Witnesses:

J. A. RITTERSHAUs, FRITZ TEBERS.

